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CONTENTS Jan/ Feb 2017 Issue 1

7 MARKET TRENDS
Annual Laser Market Review & Forecast: Where have all the lasers gone?
Laser companies both small and large are feeling the recent surge of tech-sector M&A
activity. Whether time-to-market or portfolio expansions play, the details reveal much
about where the laser industry is heading in the next decade.

26 Additive Manufacturing
The Importance of Laser Source in
Additive Manufacturing
19 APPLICATIONS With regular measurements of the laser’s
delivered power, beam size, and beam location,
Galvo scanners Additive Manufacturing procedures can be
Galvo scanners reach megahertz-scale specified that deliver consistent quality over and
range repetition rates for laser
a) b) over again.
micromachining
10 µm
10 µm
Maximizing ablation efficiency and choosing the
correct peak fluence enable both high throughput 30 INTERVIEW
and a high-quality laser-machining process.
High power diode laser is developing
towards ‘Four High’ goals
21 Laser Welding Dr. Victor Liu, the president of Foucs Light, said
Application of fiber laser in aluminum that the diode laser is developing towards four
alloy IT components trends, which are high power, high electro-optical
conversion efficiency, high brightness and high
By comparing the experimental results of pulsed pumping efficiency.
laser and fiber laser in welding aluminum alloy IT
components, it is shown that the fiber lasers can
obtain greater strength, higher efficiency, better 32 Committed to the industrialization of
appearance and similar deformation.
fiber laser in China
Mr. Li Xiaojun, general manager of Shanghai
24 TECHNOLOGIES CENTER Feibo Laser Co., Ltd, told the growth stories of
promoting the industrialization of fiber laser in
Optical Fiber Amplifiers China.
-60
Transmission (dB) Bismuth-doped fiber-optic amplifier
-70 Pump
-80 channel Signal
Wavelength Bi-doped -90 channel operates in the 1700 nm window
division Wavelength 1500 1600 1700 1800
Er:Yb multiplexer (nm)
Wavelength Making laser processing excellence
laser Optical Optical division multiplexer Optical Scientists from Russian have developed a bismuth 34
isolator Circulator Signal isolator isolator signal
Input Output without loss
1600 nm Fiber Bragg 1550 nm 1550 nm (Bi)-doped optical fiber amplifier that operates
1790 nm gratings laser diode laser diode
from 1640 to 1770nm for future communications Dr. Zhao Yuxing, General Manager of Delphi
bandwidth needs. Laser , introduced the market opportunities and
its solutions in laser precision machining.
25 Quantum-cascade Lasers
Electrically pumped broadband random
terahertz laser is highly directional 4 EDITOR’S NOTES
34%
Researchers from Austria have come up with a 5 LEADING EDGE SNAPSHOTS
solution to the divergence problem in terahertz-
25%
Intensity 35 PRODUCTS HIGHLIGHTS
(a.u.) emitting QCL by drawing from a laser concept of
400 GHz
the random laser. 36 AD INDEX
18%
8%
3.7 3.8 3.9 4.0 4.1 4.2
Frequency (THz)
About Laser Focus World China
Published since 2005, Laser Focus World China, the Chinese editionof the world famous Laser Focus World magazine, is the professional
magazine for engineers, researchers, scientists, and technical professionalsin China. It provides comprehensive global coverage of optoelectronictechnologies, industrial and R&D applications, and market information. The
editorial content licensed exclusively from Laser Focus World magazine is supplement by content generated by our own editors in China.
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Laser Focus World China, ISSN 1817-6917 is published bi-monthly by ACT International, Unit B, 13/F, Por Yen Building, No. 478 Castle Peak Road, Cheung Sha Wan, Kowloon, Hong Kong, under the license of PennWell
Corporation, 1421 S. Sheridan Road, Tulsa, OK 74112. Copyright 2010. All rights reserved. This publication contains article reprinted from Laser Focus World magazine. Laser Focus World is exclusively owned and
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